@inbook{MolluscaBase:SourceID:365419, author = {Pilsbry, H. A.}, title = {Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 7: Helicidae, vol.5. pp 1-225, pls 1-61. Philadelphia, published by the Conchological Section, Academy of Natural Sciences. [pp. 1-64, pls. 1-15, Aug. 3, 1891; pp. 65-128, pls. 16-30, Nov. 3, 1891; pp. 129-192, pls. 31-45, Jan. 30, 1892; pp. 193-225, pls. 46-61, Apr. 25, 1892]}, url = {https://biodiversitylibrary.org/page/1102230}, year = {1891-1892} }